To investigate human-perceived directions of “up” and “down” the Institute of Visual Computing (Bonn-Rhein-Sieg University of Applied Sciences) attracted funding for research from Federal Ministry of Economy. Together with DLR (Germany’s national research center for aeronautics and space) it will study how human perception can be manipulated especially under uncommon conditions such as low or high gravity. These gravitational stimuli are simulated by a short arm centrifuge, on which the tests will be realised.